<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" srcset="" />
      </div>
      <!-- 登录表单区域 -->
      <el-form
        ref="loginFromRef"
        class="login_form"
        :model="loginForm"
        :rules="loginFormRules"
      >
        <!-- 用户名 -->
        <el-form-item label="" prop="username">
          <el-input
            prefix-icon="el-icon-user-solid"
            v-model="loginForm.username"
            pro
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item label="" prop="password">
          <el-input
            prefix-icon="el-icon-unlock"
            type="password"
            v-model="loginForm.password"
          ></el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button type="primary" @click="login('loginFromRef')"
            >登录</el-button
          >
          <el-button type="info" @click="resetLogin('loginFromRef')"
            >重置</el-button
          >
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      loginForm: {
        username: 'admin',
        password: '123456',
      },
      loginFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' },
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'change' },
          {
            min: 3,
            max: 10,
            message: '长度在 3 到 10 个字符',
            trigger: 'blur',
          },
        ],
      },
    }
  },
  methods: {
    resetLogin(formName) {
      this.$nextTick(() => {
        this.$refs[formName].resetFields()
      })
    },
    login(formName) {
      this.$nextTick(function () {
        this.$refs[formName].validate(async (valid) => {
          if (valid) {
            const { data: res } = await this.$http.post(
              '/login',
              this.loginForm
            )
            if (res.meta.status !== 200) {
              return alert('登录失败')
            } else {
              this.$message.success('登录成功')
              window.sessionStorage.setItem('token', res.data.token)
              this.$router.push('/home')
            }
          }
        })
      })
    },
  },
}
</script>
<style lang="less" scoped>
.login_container {
  background-color: beige;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.avatar_box {
  width: 130px;
  height: 130px;
  border: 3px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
  img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #eee;
  }
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
.btns {
  display: flex;
  justify-content: center;
}
</style>